Here is the full list of all 34 Basingstoke achievements.
Completed Campaign Level 1
10 Campaign Deaths
25 Campaign Deaths
100 Campaign Deaths
Killed by blast damage
Killed by electrical damage
Killed by fire damage
Completed Campaign Level 2
Completed Campaign Level 3
Completed Campaign Level 4
Completed Campaign Level 5
Completed Campaign Level 6
Completed Campaign Level 7
Completed Campaign Level 8
Completed Campaign Level 9
Completed Campaign Level 10
Finished an Underground level
Finished a Wasteland level
Killed 10 enemies
Killed 25 enemies
Killed 100 enemies
10 kills with melee
25 kills with melee
100 kills with melee
10 kills with guns
25 kills with guns
100 kills with guns
25 kills by fire
25 kills by electricity
25 kills by chainsaw
25 melee kills on unaware enemies
Fed an enemy to a tentacle
Stole all the museum vases
Photographed all enemy types